#!amber

# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


# A test for a bug found by the GraphicsFuzz project.

# Short description: A fragment shader with struct array and always true if

# The test passes because the shader always writes the color red.

SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 320 es
# precision highp float;
#
# precision highp int;
#
# layout(location = 0) out vec4 _GLF_color;
# layout(set = 0, binding = 0) uniform buf0
# {
#     vec2 injectionSwitch;   // x == 0.0, y == 1.0
# };
# struct struct_base
# {
#     int data;
#     int leftIndex;
#     int rightIndex;
# };
#
# struct_base struct_array[3] = struct_base[3](struct_base(1, 1, 1), struct_base(1, 1, 1), struct_base(1, 1, 1));
#
#
# void main()
# {
#     int index = 1;
#     struct_array[1].rightIndex = 1;
#     // Always true.
#     if (struct_array[1].leftIndex == 1)
#     {
#         // index == 1
#         index = struct_array[int(injectionSwitch.x)].rightIndex;
#     }
#     else
#     {
#         // index == 1
#         index = struct_array[int(injectionSwitch.y)].leftIndex;
#     }
#     // Always true.
#     if(struct_array[1].leftIndex == 1)
#     {
#         _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
#     }
#     else
#     {
#         _GLF_color = vec4(1.0);
#     }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 60
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %54
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %7 "struct_base"
               OpMemberName %7 0 "data"
               OpMemberName %7 1 "leftIndex"
               OpMemberName %7 2 "rightIndex"
               OpName %12 "struct_array"
               OpName %17 "index"
               OpName %29 "buf0"
               OpMemberName %29 0 "injectionSwitch"
               OpName %31 ""
               OpName %54 "_GLF_color"
               OpMemberDecorate %29 0 Offset 0
               OpDecorate %29 Block
               OpDecorate %31 DescriptorSet 0
               OpDecorate %31 Binding 0
               OpDecorate %54 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 1
          %7 = OpTypeStruct %6 %6 %6
          %8 = OpTypeInt 32 0
          %9 = OpConstant %8 3
         %10 = OpTypeArray %7 %9
         %11 = OpTypePointer Private %10
         %12 = OpVariable %11 Private
         %13 = OpConstant %6 1
         %14 = OpConstantComposite %7 %13 %13 %13
         %15 = OpConstantComposite %10 %14 %14 %14
         %16 = OpTypePointer Function %6
         %18 = OpConstant %6 2
         %19 = OpTypePointer Private %6
         %23 = OpTypeBool
         %27 = OpTypeFloat 32
         %28 = OpTypeVector %27 2
         %29 = OpTypeStruct %28
         %30 = OpTypePointer Uniform %29
         %31 = OpVariable %30 Uniform
         %32 = OpConstant %6 0
         %33 = OpConstant %8 0
         %34 = OpTypePointer Uniform %27
         %41 = OpConstant %8 1
         %52 = OpTypeVector %27 4
         %53 = OpTypePointer Output %52
         %54 = OpVariable %53 Output
         %55 = OpConstant %27 1
         %56 = OpConstant %27 0
         %57 = OpConstantComposite %52 %55 %56 %56 %55
         %59 = OpConstantComposite %52 %55 %55 %55 %55
          %4 = OpFunction %2 None %3
          %5 = OpLabel
         %17 = OpVariable %16 Function
               OpStore %12 %15
               OpStore %17 %13
         %20 = OpAccessChain %19 %12 %13 %18
               OpStore %20 %13
         %21 = OpAccessChain %19 %12 %13 %13
         %22 = OpLoad %6 %21
         %24 = OpIEqual %23 %22 %13
               OpSelectionMerge %26 None
               OpBranchConditional %24 %25 %40
         %25 = OpLabel
         %35 = OpAccessChain %34 %31 %32 %33
         %36 = OpLoad %27 %35
         %37 = OpConvertFToS %6 %36
         %38 = OpAccessChain %19 %12 %37 %18
         %39 = OpLoad %6 %38
               OpStore %17 %39
               OpBranch %26
         %40 = OpLabel
         %42 = OpAccessChain %34 %31 %32 %41
         %43 = OpLoad %27 %42
         %44 = OpConvertFToS %6 %43
         %45 = OpAccessChain %19 %12 %44 %13
         %46 = OpLoad %6 %45
               OpStore %17 %46
               OpBranch %26
         %26 = OpLabel
         %47 = OpAccessChain %19 %12 %13 %13
         %48 = OpLoad %6 %47
         %49 = OpIEqual %23 %48 %13
               OpSelectionMerge %51 None
               OpBranchConditional %49 %50 %58
         %50 = OpLabel
               OpStore %54 %57
               OpBranch %51
         %58 = OpLabel
               OpStore %54 %59
               OpBranch %51
         %51 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# injectionSwitch
BUFFER variant_injectionSwitch DATA_TYPE vec2<float> STD140 DATA
 0.0 1.0
END

BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM

PIPELINE graphics variant_pipeline
  ATTACH variant_vertex_shader
  ATTACH variant_fragment_shader
  FRAMEBUFFER_SIZE 256 256
  BIND BUFFER variant_framebuffer AS color LOCATION 0
  BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 0
END
CLEAR_COLOR variant_pipeline 0 0 0 255

CLEAR variant_pipeline
RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256

EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255